From: Dmitry V. Levin <ldv@altlinux.org>
Date: Fri, 2 Aug 2019 16:53:02 +0000 (+0000)
Subject: tests: check the latest MSG_TRUNC decoding fix
X-Git-Tag: v5.3~103
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=7f39f00a3780a84be6aa2d170e1129e7e31ffd8b;p=strace

tests: check the latest MSG_TRUNC decoding fix

* tests/recv-MSG_TRUNC.c: New file.
* tests/recvfrom-MSG_TRUNC.c: Likewise.
* tests/gen_tests.in (recv-MSG_TRUNC, recvfrom-MSG_TRUNC): New entries.
* tests/pure_executables.list: Add recv-MSG_TRUNC and
recvfrom-MSG_TRUNC.
* tests/.gitignore: Likewise.
---

diff --git a/tests/.gitignore b/tests/.gitignore
index 7774ceec..2b099350 100644
--- a/tests/.gitignore
+++ b/tests/.gitignore
@@ -463,7 +463,9 @@ readlink
 readlinkat
 readv
 reboot
+recv-MSG_TRUNC
 recvfrom
+recvfrom-MSG_TRUNC
 recvmmsg-timeout
 recvmsg
 redirect-fds
diff --git a/tests/gen_tests.in b/tests/gen_tests.in
index f90910f1..4a506b94 100644
--- a/tests/gen_tests.in
+++ b/tests/gen_tests.in
@@ -380,7 +380,9 @@ readdir	-a16
 readlink	-xx
 readlinkat	-xx
 reboot		-s 256
+recv-MSG_TRUNC	-a26 -e trace=recv
 recvfrom	-a35
+recvfrom-MSG_TRUNC	-e trace=recvfrom
 recvmmsg-timeout	-a25 -e trace=recvmmsg
 recvmsg	-eread=0 -ewrite=1 -e trace=recvmsg,sendmsg
 regex	test_trace_expr '' -etrace='/^(.*_)?statv?fs'
diff --git a/tests/pure_executables.list b/tests/pure_executables.list
index 3224999e..f55ae8a8 100755
--- a/tests/pure_executables.list
+++ b/tests/pure_executables.list
@@ -390,7 +390,9 @@ readlink
 readlinkat
 readv
 reboot
+recv-MSG_TRUNC
 recvfrom
+recvfrom-MSG_TRUNC
 recvmmsg-timeout
 recvmsg
 remap_file_pages
diff --git a/tests/recv-MSG_TRUNC.c b/tests/recv-MSG_TRUNC.c
new file mode 100644
index 00000000..ee9ea632
--- /dev/null
+++ b/tests/recv-MSG_TRUNC.c
@@ -0,0 +1,59 @@
+/*
+ * Check decoding of recv MSG_TRUNC.
+ *
+ * Copyright (c) 2019 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "tests.h"
+#include <errno.h>
+#include <stdio.h>
+#include <sys/socket.h>
+#include "scno.h"
+
+#ifndef __NR_recv
+# define __NR_recv -1
+#endif
+#define SC_recv 10
+
+static int
+sys_recv(int sockfd, const void *buf, unsigned int len, int flags)
+{
+	int rc = socketcall(__NR_recv, SC_recv,
+			    sockfd, (long) buf, len, flags, 0);
+	if (rc < 0 && ENOSYS == errno)
+		perror_msg_and_skip("recv");
+	return rc;
+}
+
+int
+main(void)
+{
+	static const char sbuf[2] = "AB";
+	int sv[2];
+	TAIL_ALLOC_OBJECT_CONST_PTR(char, rbuf);
+
+	if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sv))
+		perror_msg_and_skip("socketpair");
+
+	if (send(sv[1], sbuf + 1, 1, 0) != 1)
+                perror_msg_and_skip("send");
+	if (sys_recv(sv[0], rbuf - 1, 2, MSG_PEEK) != 1)
+		perror_msg_and_fail("recv");
+	printf("recv(%d, \"B\", 2, MSG_PEEK) = 1\n", sv[0]);
+
+	if (sys_recv(sv[0], rbuf, 1, MSG_TRUNC) != 1)
+		perror_msg_and_skip("recv");
+	printf("recv(%d, \"B\", 1, MSG_TRUNC) = 1\n", sv[0]);
+
+	if (send(sv[1], sbuf, 2, 0) != 2)
+                perror_msg_and_skip("send");
+	if (sys_recv(sv[0], rbuf, 1, MSG_TRUNC) != 2)
+		perror_msg_and_skip("recv");
+	printf("recv(%d, \"A\", 1, MSG_TRUNC) = 2\n", sv[0]);
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}
diff --git a/tests/recvfrom-MSG_TRUNC.c b/tests/recvfrom-MSG_TRUNC.c
new file mode 100644
index 00000000..b8ef3786
--- /dev/null
+++ b/tests/recvfrom-MSG_TRUNC.c
@@ -0,0 +1,42 @@
+/*
+ * Check decoding of recvfrom MSG_TRUNC.
+ *
+ * Copyright (c) 2019 Dmitry V. Levin <ldv@altlinux.org>
+ * All rights reserved.
+ *
+ * SPDX-License-Identifier: GPL-2.0-or-later
+ */
+
+#include "tests.h"
+#include <stdio.h>
+#include <sys/socket.h>
+
+int
+main(void)
+{
+	static const char sbuf[2] = "AB";
+	int sv[2];
+	TAIL_ALLOC_OBJECT_CONST_PTR(char, rbuf);
+
+	if (socketpair(AF_UNIX, SOCK_DGRAM, 0, sv))
+		perror_msg_and_skip("socketpair");
+
+	if (send(sv[1], sbuf + 1, 1, 0) != 1)
+                perror_msg_and_skip("send");
+	if (recvfrom(sv[0], rbuf - 1, 2, MSG_PEEK, NULL, NULL) != 1)
+		perror_msg_and_fail("recvfrom");
+	printf("recvfrom(%d, \"B\", 2, MSG_PEEK, NULL, NULL) = 1\n", sv[0]);
+
+	if (recvfrom(sv[0], rbuf, 1, MSG_TRUNC, NULL, NULL) != 1)
+		perror_msg_and_skip("recvfrom");
+	printf("recvfrom(%d, \"B\", 1, MSG_TRUNC, NULL, NULL) = 1\n", sv[0]);
+
+	if (send(sv[1], sbuf, 2, 0) != 2)
+                perror_msg_and_skip("send");
+	if (recvfrom(sv[0], rbuf, 1, MSG_TRUNC, NULL, NULL) != 2)
+		perror_msg_and_skip("recvfrom");
+	printf("recvfrom(%d, \"A\", 1, MSG_TRUNC, NULL, NULL) = 2\n", sv[0]);
+
+	puts("+++ exited with 0 +++");
+	return 0;
+}